Quarter	Percent, Seasonally Adjusted
1998-01-01	49.6461348527240
1998-04-01	49.7775142276523
1998-07-01	49.9416071121388
1998-10-01	49.8718646429964
1999-01-01	50.1007606570520
1999-04-01	49.4678586007091
1999-07-01	49.2859895521969
1999-10-01	49.1741120484265
2000-01-01	49.4973426611909
2000-04-01	49.7343091807422
2000-07-01	49.9315361714231
2000-10-01	50.0390440942165
2001-01-01	49.8444277412015
2001-04-01	49.5946846595387
2001-07-01	49.6911111856148
2001-10-01	49.3114089291147
2002-01-01	49.7086741424486
2002-04-01	50.4287117910594
2002-07-01	50.7127332852063
2002-10-01	50.9622912613809
2003-01-01	51.2358526944220
2003-04-01	51.3530846629031
2003-07-01	51.5331520886529
2003-10-01	51.5226847124208
2004-01-01	51.4809740436850
2004-04-01	51.8032604329376
2004-07-01	51.8015156618468
2004-10-01	51.9784325485575
2005-01-01	52.1355609126270
2005-04-01	52.2922789506522
2005-07-01	52.2832136350165
2005-10-01	52.6612898037719
2006-01-01	53.0651985636108
2006-04-01	53.1439139467503
2006-07-01	53.5345694527686
2006-10-01	53.4384104603536
2007-01-01	53.4454315532572
2007-04-01	53.6231272960920
2007-07-01	53.8105737051449
2007-10-01	53.9345801587480
2008-01-01	54.1056603758403
2008-04-01	54.4192853889536
2008-07-01	54.3570908961937
2008-10-01	54.3228431129916
2009-01-01	54.0588333871674
2009-04-01	54.0242030447161
2009-07-01	53.9429420901730
2009-10-01	53.5768725364598
2010-01-01	53.2367785717662
2010-04-01	52.6501648957510
2010-07-01	52.1135045043905
2010-10-01	51.3088454929997
2011-01-01	50.3528140494715
2011-04-01	49.3114455728576
2011-07-01	48.1394691984429
2011-10-01	46.9090116727754
2012-01-01	46.0812929556650
2012-04-01	44.8848351523768
2012-07-01	44.0440166009002
2012-10-01	43.8375169255385
2013-01-01	43.2085906093799
2013-04-01	42.8880822394920
2013-07-01	42.6876092924628
2013-10-01	42.6699364754792
2014-01-01	43.2006654798304
2014-04-01	43.1302260767641
2014-07-01	43.5431850070680
2014-10-01	43.6265411674829
2015-01-01	43.7868271516909
2015-04-01	44.4362754437914
2015-07-01	44.7904642291455
2015-10-01	45.2163943831958
2016-01-01	45.3268768674726
2016-04-01	45.5918905578384
2016-07-01	45.8122607562924
2016-10-01	45.6277341100159
2017-01-01	46.2147567657695
2017-04-01	46.8199724374927
2017-07-01	47.0904667493621
2017-10-01	46.9872461726042
2018-01-01	47.2569895180391
2018-04-01	47.8839271044527